Transmission friction-clutch.



A B. G. GRIZZELL. TRANSMISSION FBIGTION CLUTCH. APPLyoATIoN FILED SEPT. 13, 1910.

1,001,140. I y l Patented Aug.22,1911.

coLllMulA PLANUGRAPM C0wAsH|Nn'roN. n. c.

EMERY C. GRIZZELL, OF CLAFLIN, KANSAS.

TRANSMISSION FRICTION-CLUTCH.

Specification of Letters Patent.

Patented Aug. 22, 1911.

Original application led February 12, 1910, Serial No. 543,624. Divided and this application filed September 13, 1910. Serial No. 581,880.

To all whom it may concern:

Be it known that I, EMERY C. GRIZZELL, a citizen of the United States, residing at Claflin, in the county of Barton and State of Kansas, have invented a new and useful Transmission Friction-Clutch; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention belongs to the art of clutches, and it particularly pertains to a new and useful transmission friction clutch, in which various novel features are involved.

The essential object of the invention is to provide a novel transmission friction clutch, whereby power may be easily and readily transmitted, to any suitable machinery (not shown) furthermore, to provide such a clutch, which, when operated, to reverse, will change the motion of the operating parts of said machinery.

The invention aimsas a further feature, to provide a novel resiliently mounted clutch shoes or members, to be alternately thrown into frictional contact with the transmission clutch wheel.

In the drawings Figure 1 is a vertical sectional view transversely through the transmission friction clutch mechanism. Fig. 2 is a sectional View on line 3 3 of Fig. 1, looking in the direct-ion of the arrow, and showing the clutch wheel and the clutches in side elevation, there being one of the clutch members shown in sect-ion. Fig. 3 is a sectional view on line 4 4 of Fig. 1, showing one of the clutches in elevation, and further displaying how a portion of the clutch member is Xed to rotate with a rectangular shaped sleeve (which is mounted on a cylindrical shaft). Fig. 4 is a sectional View on line 5 5 of Fig. 1, showing how the gear is keyed to rotate with the cylindrical portion of a sleeve (which is mounted upon the section 21a of the shaft 21), so the section 21a of the shaft will rotate freely when the clutch members are not frictionally engaging the clutch wheel. Fig. 5 is a sectional view upon line 6 6 of Fig. 1, illustrating the manner of mounting the slidable clutch hub upon a rectangular portion of the sleeve shown in Fig. 4.

Referring to the drawings, 21 denotes a crank shaft, on which is a transmission friction clutch wheel 23, which is adapted to transmit power to any suitable device (not shown). The clutches or members 23a and 23lo of the clutch wheel may be thrown in and out of contact with the wheel 23. The crank shaft 21 is constructed in three sections 21a 21.1, and 21, Mounted on the section 21 are the sprocket wheel and the gear 26 and 24, which are designed for the purpose of transferring forward or reverse power to any suitable device. The friction clutch wheel 23 is keyed, as shown at55, to the section 21a of the shaft 21, in order to rotate therewith. Loosely journaled upon the section 21a of the shaft 21 are sleeves 56 and 57, the end portions 58 of which are cylindrical, as shown clearly in Fig. 3, and to these end portions the pinion 24 and sprocket wheel 26 are keyed, by means of the feathers 59. It will be observed that the wheel 24 and sprocket wheel 26 will rotate with the said sleeves. The remaining portions of the sleeves 56 and 57 are rectangular in cross section, as will beclearly seen at 6() in Figs. 3 and 4, as well as in Fig. 6. Mounted upon the rectangular portions of said sleeves are clutch hub members 61 and 62, from which spokes or rods 63 and 64 project at right angles to one another. The clutch members or shoes 23*i and 23b are mounted upon the ends' of these rods or spokes to slide outwardly, as shown clearly at 65 in Fig. 3 in order to be thrown in contact with the clutch wheel 23. The clutch members or shoes are provided with integral shells 66, in which springs 67 as shown in Fig. 3, are mounted. Passing through the springs are the threaded ends 68 of the rods 69, and threaded upon the rodsy 69 are nuts or members 70, between which and the clutch members or shoes the said springs are interposed. By adjusting these nuts toward the springs, it will be clearly seen that the tendency of the clutch members or shoes is to engage the clutch wheel. Also, mounted upon the rectangular portions of the sleeves 56 and 57 are slidable clutch hubs 71 and 72, which are provided with annular grooves 7 3for the reception of the collars 74. Projecting from the collars 74 are pins 75, with which the forked ends of levers (not shown) engage for shifting the clutch hubs. f

Connecting the slidable clutch hubs and the clutch members or shoes are rods 79 and 80, and through these connecting rods the .110

clutch members or shoes may be thrown in i `that the clutch members or shoes 23EL are thrown in engagement `with the clutch wheel.

In this case the gear 24 is rotated in the direction of the arrow 81, which in turn may be adapted for transmitting power to other devices. To reverse the machine, the clutch hub 71 is shiftedv so as to throw the clutch members or shoes 23b in engagement with the clutch wheel 23, and by so doing the directions of the rotation of the other device is changed.

The sections 21a, 21b and 21c are coupled together, shown more clearly in F ig. 2, by means of collars 98. Penetrating the flanges of the collars are bolts 95 to hold them se-y curely in place. These collars are secured to the sections of the shaft 21, by means of pins 94, in order that the sections of the shaft 21 may rotate as one body.

This invention is a divisional application,

-divided from the allowed application for a patentrupon a traction engine gearing, led

sleeve and provided with outwardly extending rods, friction'clutch shoes guided upon the extremities of the rods adjacent the inner circumference of the band of the wheel,`,rods extending substantially transversely of the wheel with their ends extended into the shoes, adjustable members threaded on vthe transversely extending rods, springs encircling the extremities of the last rods between the bottoms of the shoes and the adjustable members for holding the shoes outwardly against the inner circumference of the clutch wheel, a clutch hub slidably mounted on the sleeve and provided with link connections with the friction clutch shoes for throwing them out of contact with the inner surface of the band of the clutch wheel.

In testimony whereof YI have signed my name to this specification in the presence of two subscribing witnesses. v

EMERY C. GRIZZELL.

Witnesses:

I-I. C. EMBRY, CLINTONGIBLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. 6.. 

